History

In an attempt to contain the Cursed Wave, the hacker Helba created a powerful vaccine program designed to trap part of the Wave in a specific location. Each member of the .hackers was given part of the vaccine and instructed to create a barrier around the Wave in a formation dubbed "Operation Orca". Her program worked, sealing Tarvos in the field Ω Cruel Vindictive Scars. Kite quickly formed a battle party and confronted the Phase, defeating it after a lengthy battle.

Tarvos is fought by the team of Kite, BlackRose, and Mistral. BlackRose immediately begins her charge and realizes that it has Physical Tolerance. The party is severely damaged by Tarvos's Malice Light attack, which it almost immediately follows up with a Cursed Death Play against BlackRose, killing her instantly. The party keeps their distance and attack with magic before it submerges into a pool of its own bloody tears and surfaces with an ambush on Mistral. Whenever it submerges and surfaces, its Tolerance shifts, so the party changes tactics accordingly until its protection is finally broken by Mistral. After Kite Data Drains Tarvos the battle becomes much easier, and the party damages it until it crumbles to dust.

Cursed Death Play: Tarvos lets out tears of blood; creates a mud dummy of a target from it and impales them with its stake. This is a one hit KO attack.

PhAni Zot: This is a level 4 dark elemental ground summon attack. Large hands that belong to a giant that has been buried hundreds of years ago erupt from the ground and claws all enemies within range to death.

Malice Light: Tarvos sends light up into the sky and crashes it down upon the opponent. This is unavoidable.

Dek Do: This decreases the speed of a single target.

Mumyn Lei: This puts a single target asleep.

Suvi Lei: This paralyzes a single target.

Rain of Daggers: Miniature versions of Tarvos's stake appear, aimed as knives, on top of a target and fall down continuously upon them, dealing heavy physical damage.

After Data Drain

Level: 99

HP: 7000

SP: N/A

Element: None

Weakness: None

Tolerance: None

Attacks

Earthquake: Same earthquake as before, except it does slightly more damage.

Malice Light: Tarvos sends light up into the sky and crashes it down upon the opponent. This is unavoidable.

Ol Repth: Recovers 400 HP.

Dek Do: Decreases the speed of a single target.

Mumyn Lei: Puts a single target asleep.

Suvi Lei: Paralyzes a single target.

PhAni Zot: This is a level 4 dark elemental ground summon attack.

Data Drained Item

Virus Core Z

Trivia

According to the uncanonical Liminality Easter Eggs, Tarvos is a program designed to collect data on human jealousy, revenge, and other dark emotions.

Tarvos means "bull", and is a bovine deity in some pantheons. It is also the name of one of Saturn's moons.